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arXiv 0710.1895hep-ex
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sqrt(s)= 1960 GeV p-pbar碰撞中关联b-bbar产生的测量

Measurement of correlated b-bbar production in p-pbar collisions at sqrt(s)=1960GeV

CDF collaboration

摘要:

我们提出了一个测量的相关$b\bar{b}$生产截面。本分析中使用的数据是由费米实验室Tevatron对撞机上升级的CDF探测器(CDF II)采集的,对应的积分光度为742 pb $^{-1}$。我们利用由$b\bar{b}$双半轻子衰变产生的质量不变的μ子对$5 \leq m_{μμ} \leq 80 \gevcc$。对于由具有$p_T \geq 2 \gevc$和$|y| \leq 1.3$的$b$和$\bar{b}$夸克产生的具有$p_T \geq 3 \gevc$和$|η| \leq 0.7$的μ子,我们测量了$σ_{b\toμ,\bar{b}\to μ}= 1549 \pm 133$ pb。我们将这一结果与理论预测和以前的测量结果进行了比较。我们还报告了$σ_{c\toμ,\bar{c}\to μ}$的测量,这是$b\bar{b}$生产背景研究的副产品。

英文摘要:

We present a measurement of the correlated $b\bar{b}$ production cross section. The data used in this analysis were taken with the upgraded CDF detector (CDF II) at the Fermilab Tevatron collider, and correspond to an integrated luminosity of 742 pb$^{-1}$. We utilize muon pairs with invariant mass $5 \leq m_{μμ} \leq 80 \gevcc$ produced by $b\bar{b}$ double semileptonic decays. For muons with $p_T \geq 3 \gevc$ and $|η| \leq 0.7$, that are produced by $b$ and $\bar{b}$ quarks with $p_T \geq 2 \gevc$ and $|y| \leq 1.3$, we measure $σ_{b\toμ,\bar{b}\to μ}= 1549 \pm 133$ pb. We compare this result with theoretical predictions and previous measurements. We also report the measurement of $σ_{c\toμ,\bar{c}\to μ}$, a by-product of the study of the background to $b\bar{b}$ production.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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